George a



UNITED STATES PATENT OFFICE.

GEORGE A. SHERLOCK, OF NEV YORK, N. Y.

PIANO-STOOL.

Specilication forming part of Letters Patent No. 50,042, dated4September 19, 1865.

To all whom it may concern..-

Beit known that I, GEORGE A. SHERLOCK, ot the city, county, and State ofNew York,

have invented new and useful Improvementsin Piano-Forte Stools and I dohereby declare that the following is a full, clear, and exactdescription thereof, which will enable others skilled in the art to makeand use the same, reference bein g had to the accompanying drawings,forming part of this specilication.

The present invention consists in so arranging the seat of a piano-fortestool upon its body portion that it can be readily adjusted and set atany desired height from the licor, so as to adapt itto the varyingheights o'f the persons who use it. rlhe manner in which l accomplishthis result is represented in the accompanying plate ot' drawings, ofwhich- Figure 1 is a central vertical section of a piano-forte stool;Fig. 2, a horizontal section taken in the plane of the line :v x, Fig.1.

a a in the drawings represent the base of t-he stool slightly raisedfrom the surface of the door by legs b b. To the center ot' this base athe body c of the stool is secured in any proper manner, by meansofglue, cement, or otherwise, in an upright position, and made either ofa square, round, or other' suitable shape, and ornamented, in connectionwith the base and legs, in any desired style ot' inish. This bodyportion c ofthe stool is made hollow, and has inserted in and attachedto and upon its interior two similar rack-bars, el d, placed at pointsdiametrically opposite to each other, with the notches f of which twocatches, g g, turning upon fulcrum-pins a', hun g by theirinner endsupon a common central rod, h, of the follower or shaft Z ofthe seat m,engage, as plainly represented in the drawings. This rod h passes upwardthrough the shaft and the top board,

n, of the seat, and has upon its upper end, 0, a

by a guard, r, of the seat, made of the proper shape to allow thejlingers to readily grasp its thumb-piece, while at the same time when aperson is sitting on the stool it cannot be in the least degree affectedthereby, the seat being upholstered in any of the ordinary styles andmodes.

When desired to raise or lower the seat, first depress the rod bybearing down upon its thumb-piece, which consequently causes the catchesto be withdrawn from the rack-bars of the body, thus leaving the seatfree to be raised orlowered, as may be desired, and to any heightwhatsoever, by grasping the guard with the remaining ngers of the hand,and when at the proper height the catches are caused to again interlockwith the rack-bars by means of the spiral spring S wound around the rodin the proper manner to so operate the same, the hand first, however,having been removed from the thumb-piece.

From the above description lit is obvious that the seat can be readilyraised or lowered, according as may be desired, and in a quick andexpeditious manner, without the tedious operation of being obliged toturn the seat by means of a screw-shaft, as has heretofore been thecase, the disadvantages ot' which have been long known and experienced.

l claim as new and desire to secure by Letters Patent- 1. Arranging theseat of a piano-forte stool upon its body in substantially the mannerdescribed and for the purpose specified.

2. In combination with the above, the use of the guards 1' r, for thepurpose explained.

The above specitlcation ot Iny invention signed by me this 6th day ofJuly, 1865.

GEO. A. SHERLOCK.

Witnesses:

M. M. LIVINGSTON, A. W. BROWN.

